ACTION OF GASEOUS AMMONIA AND WATER ON NEODYMIUM DIPHTHALOCYANINE

The method of flow injection into the gas flow with detection of curre nt resistance of the film was used to investigate the action of ammoni a and water vapor on neodymium diphthalocyanine film. The value and si gn of the etectrophysical response are reversible at 18-22 degrees C. When the film contacts with vapor, the current is changed within a few seconds, whereas the relaxation to the initial value when vapor is re moved occurs within tens of seconds. The response parameters are suita ble for developing effective sensors based on resistant films. No opti cal changes in the absorption spectra of the films were observed in th e 400-800 nm region under the action of ammonia and water vapor.